Hypohesis: There is no difference (null hypothesis) in how men and women rank the intelligence of red-haired persons
Results: In our class of 29 respondents, the null hypothsis was proven correct, under the constriants of the likely less than random sample of 29 UA colllege students.
Question: Why is this sample chosen not likely to be representative of the views of Americans in general?
Here's a quick article on some facts/myths about redheads!
| 1. Select category | 2. Choose calculator | 3. Enter data | 4. View results |
Unpaired t test results
| P value and statistical significance: The two-tailed P value equals 0.5127 By conventional criteria, this difference is considered to be not statistically significant. Confidence interval: The mean of Men minus Women equals 0.71 95% confidence interval of this difference: From -1.48 to 2.89 Intermediate values used in calculations: t = 0.6634 df = 27 standard error of difference = 1.066 Learn more:
GraphPad's web site includes portions of the manual for GraphPad Prism that can help you learn statistics. First, review the meaning of P values and confidence intervals. Then learn how to interpret results from an unpaired or paired t test. These links include GraphPad's popular analysis checklists.
Review your data: |
| Group | Men | Women |
|---|---|---|
| Mean | 3.89 | 3.18 |
| SD | 3.07 | 2.23 |
| SEM | 0.72 | 0.67 |
| N | 18 | 11 |
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